How to match regions in strings ?

JAVA Program

public class StringRegionMatch {
	public static void main(String[] args) {
		String first_str = "Welcome to Microsoft";
		String second_str = "I work with Microsoft";
		boolean match = first_str.
		      regionMatches(11, second_str, 12, 9);
		System.out.println("first_str[11 -19] == "+ "second_str[12 - 21]:-"+ match);
	}
}

Output

first_str[11 -19] == second_str[12 - 21]:-true